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Application Engineer III - Integration

Stellar IT Group

Overview:

Application Engineer III - Integration

Location: Texas (preferred: San Antonio or Houston; flexible statewide)

Work Mode: Remote

Duration: Long-term contract

Role Overview

We are seeking a seasoned Application Engineer III - Integration to join our team and drive enterprise-level integration initiatives. This role requires deep expertise in building, debugging, and optimizing complex interconnected systems, with a strong focus on APIs, messaging, and middleware. The ideal candidate will operate at a senior engineer level, balancing hands-on technical work with system-level testing and validation in highly regulated environments.

Key Responsibilities

  • Design, implement, and support enterprise integrations across APIs, messaging systems, and middleware.
  • Work with message queue technologies (MQ/MQS or similar) to ensure reliable data flow.
  • Debug and troubleshoot issues across distributed, interconnected systems (e.g., ESP, NuSoft, or similar platforms).
  • Perform integration and system-level testing to validate end-to-end data lifecycle.
  • Identify and resolve issues across multiple systems with a strong QA mindset.
  • Collaborate with cross-functional teams to ensure seamless integration and compliance with standards.
  • Operate in environments where engineers are responsible for both development and testing.
Required Skills & Experience

Technical Expertise

  • Strong background in enterprise integrations (API, messaging, middleware).
  • Hands-on experience with message queue technologies (MQ/MQS or similar).
  • Familiarity with REST/SOAP APIs, data validation, and transformation.
  • Proficiency in SQL and database querying.
  • Strong debugging and troubleshooting skills across distributed systems.
Testing & QA Mindset
  • Proven ability to perform integration and system-level testing.
  • Experience validating full data lifecycle end-to-end.
  • Ability to identify issues across multiple interconnected systems.
Experience Level
  • 7-10+ years of professional engineering experience.
  • Prior experience operating at a senior or lead engineer level.
  • Background in financial services or other highly regulated industries is a plus.

Skills:

API,INTEGRATION,MQ,MQS,Message Queue
Vacancy posted 20 hours ago
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